TAC Solutions
Built for the access control problems your security stack can’t solve.
Total Access Control addresses six of the access challenges that matter most to modern enterprises — from AI agents and OT systems to legacy applications and the inbound ports that should have been closed years ago. One reverse-proxy platform. One policy engine. One audit trail.
Six Solutions
One platform. Six ways it shows up in your environment.
Each solution below is a different doorway into TAC. Same reverse-proxy architecture, same admin console, same per-user licensing — applied to the access control problem you walked in with.
Govern non-human identities like you govern people.
Your IAM team is asking how to control AI agents that act on behalf of users. TAC enforces verified identity, scoped permissions, and full audit on every agent request.
- ✓ Verified agent identity from your IdP
- ✓ Resource-level access, scoped per agent
- ✓ Session-scoped tokens, useless outside TAC
- ✓ Full audit trail of every agent action
Close every inbound port. Keep one.
Your firewall has dozens of inbound ports. Each one is a potential entry point. TAC routes all application traffic through a single encrypted port — everything else closes.
- ✓ One inbound port, all traffic encrypted
- ✓ Replace VPN concentrators and jump hosts
- ✓ Eliminate RDP gateways and SaaS connectors
- ✓ Inbound attack surface near zero
Modern security on apps that can’t be modernized.
The thick-client, forms-based, and mainframe applications running your business can’t speak SAML. TAC wraps them with MFA, device posture, and SSO — no code changes.
- ✓ No source code changes to legacy apps
- ✓ MFA on thick-client and forms-based apps
- ✓ Device posture enforced per session
- ✓ SSO across every app — modern and legacy
Secure access to OT. Without touching a single device.
Your OT environment doesn’t need changes to the plant floor — it needs a better front door. TAC governs who reaches HMIs, SCADA servers, and engineering workstations.
- ✓ Zero changes to PLCs, HMIs, or field devices
- ✓ Vendor and contractor access, fully scoped
- ✓ NERC CIP-005 / CIP-007 evidence by default
- ✓ IEC 62443 zone/conduit alignment
Application-aware access. Without the network exposure.
VPN was built for a different era — one where the inside was trusted. TAC replaces it with application-level access that never grants network-level reach.
- ✓ Per-application access, not network-wide
- ✓ No lateral movement on your network
- ✓ Faster than tunneling, no client required
- ✓ Decommission VPN concentrators
Every principle of NIST 800-207. In one platform.
Most products claim zero trust. TAC implements every principle of NIST SP 800-207 architecture — verify every user, every device, every request, every time.
- ✓ Never trust, always verify on every request
- ✓ Continuous evaluation, not session-start only
- ✓ Microsegmentation at the application layer
- ✓ Maps directly to NIST 800-207 components
Which Solutions Apply to You
Find your way in by the outcome you’re after.
Most TAC conversations start with one of three outcomes. Pick the one that matches where you are — we’ll point you at the solutions that move the needle for it.
Reducing attack surface
You’re trying to shrink what’s exposed to the internet — fewer ports, less lateral movement, less VPN reach.
Modernizing access
You’re bringing MFA, device posture, and zero-trust principles to applications that weren’t built for them.
Securing what’s new
You’re bringing AI agents into production or extending zero trust into OT — access surfaces your stack wasn’t designed for.
Solutions by Industry
Built for the compliance reality you operate in.
From government and defense to OT-heavy industries and regulated finance — TAC’s single-tenant architecture and all-inclusive licensing fit eight industries with eight different sets of requirements.
Not Sure Where to Start?
Book a 30-minute scoping call.
Walk through your environment with a PortSys engineer. We’ll show you which TAC solutions apply, what a deployment looks like, and how quickly you can get to first value. Or grab the overview datasheet and start with the basics.